Attachment plug for oiling systems for internal-combustion engines



R. w. SAUNDERS. ATTACHMENT PLUG FOR OILING SYSTEMS FOR INTERNALCOMBUSTION ENGINES. APPLICATION FILED OCT- B, 1921.

31,421,725. I Patented July 4, 1922.,

A TTOR/JEYS JRANDA-LL VIZLLIAIE SAUNDERS, 0F BROOK-LYN, 'NE'W YORK.

Specification of Letters Fatent.

Patented July 4., 1922.

Application filed October 8, 1921. Serial No. 506,418

'1' 0 all to hom it may concern Be it known that I, RANDALL WILLIAMSAUNnnns, a citizen of the United States, and a resident of Brooklyn, inthe county of Kings and State of New York, have invented certain new anduseful Improvements in rittachment Plugs for ()iling Systems forInternal-Combustion Engines, of which the following is a specification.

This invention relates to oiling systems for internal combustion enginesand more particularly to an attachment plug therefor. The object of theinvention is to provide a plug of the above character adapted to be usedfor facilitating the blowing out or cleaning the interior of pipes orconduits employed in oiling systems for internal combustion engines orthe like.

It is also an object of the invention that the plug be adapted to beeasily attached or positioned.

It is a further object of the invention that the plug be adapted to beeasily connected with a source of compressed air supply or the like.

Other objects will hereinafter appear.

The invention is illustrated by way of eX- ample in the accompanyingdrawings, in which Figure 1 is a view in side elevation of an internalcombustion engine with which the present invention may be utilized andparts of the engine housing being broken away to more clearly illustratethe application of the invention.

Figure 2 isa vertical sectional view of a check valve employed in theoiling system for the internal combustion engine shown in Figure 1.

Figure 3 is a view in side elevation of the check valve and showing theattachment plug applied thereto.

Figure 4; is a view in side elevation of the plug.

Figure 5 is a vertical sectional view of the same.

Referring to the drawings more particularly, E indicates generally theinternal combustion engine of which C is the crank case, C crank shaft,R a connecting rod between a piston and crank shaft. In the particulartype of oiling system shown there is employed a pipe or conduit P whicheX- tends the entire length of the crank case and positioned above thecrank shaft as shown. At the rear end of this pipe there is connectedtherewith a check valve V. The check valve V consists in a body portion7 having extending therefrom the exterior-1y threaded nipples 8 and 9and the interiorly threaded nipple 10. The nipple 10 has threadec'itherein a plug 11 which has formed upon its lowerend a stud adapted toengage a compression spring 12, said compression spring in turn engaginga ball 13 which is adapted to close the passage of the nipple 9. Thenipple 8 is threaded into the associated wall of the engine andcommunicates with the pipe P, while the nipple 9 is connected with apipe 14, and the pipe 1 1 in turn being suitably connected with a pumpP. The pump P is adapted to force oil upwardly through the pipe 14,unseat the ball 13 and force the oil into the pipe P.

The pipe P is provided with a plurality of orifices 15 which are spacedin equal intervals the entire length thereof and adapted to permit oilto fall upon the bearings of the crank shaft C for lubricating the samein a manner well understood. The forward end of the pipe P is closed bya screw plug 16. Also there is provided a pipe or tube 17 whichcommunicates at its one end with the oil pressure pipe 14, and at itsother end with a gauge G whereby the amount of oil pressure in the pipe14 may be determined.

in an oiling system of this nature, as is well known, the orifices 15 ofthe pipe P become clogged from sediment and other foreign matter in theoil and thus stops the oiling of the crank shaft bearings which it isdesirable to avoid." In fact manufacturers who placeinternal combustionengines upon the market employing oiling systems of this nature instructthat the pipe P should be blown out and cleaned at frequent intervals inorder to avoid any possibility of its orifices 15 being clogged.

in carrying out the present invention, I provide a plug of the designand structure generally indicated at A in Figure 1 and specificallyshown in Figures and 5. The plug consists in a body portion 18 which isin the form of a hexagon nut, or the like, and from one side of whichthere extends a boss 19 which is exteriorlv threaded as at 20 andadapted for being threaded into the nipple 10 of the check valve V. Theother side of the body portion or nut' head 18 is formed with a stem ornipple extension 21, and a passage 22 extends through said tion to'theusual stem projecting from an air valve on an automobile tire, or thelike, and is adapted to be utilized in the same manner, that is, wheninserted into the end of an air hose connected with a source ofcompressed air, supply the same will operate thevalve within the airhose to permit compressed air to enter the passage of the plug.

In utilizing the present invention, the plug l1 of the check valve V isremoved and the plug A substituted. An air hose as indicated at 23,Figure 1, may then be positioned on the nippleor'stem 21 of the plug andair injected into the pipe P. The air cannot pass downwardly through thecheck valve into the pipe 141 for the reason that the ball 13 of thecheck valve would not permit such passageof the air. The compressed airen tering' the pipe P will of course blow any sediment within theorifices 15 of said pipe, andthe plug 16 may be removed at the same timein order to permit all sediment or foreign matter Within the pipe to befreely blown therefrom.

While I have shown my particular invention as being utilized inconnection for blowing out; or cleaning an oiling system for internalcombustion engines, I am well aware otthe factthat the same could beemployed for similar purposes with equal advantages as indicated by theappended claims.

1. In an oiling system of the character described, a conduit or pipeconnected to a.

source'of oil supply under pressure at its one end and having outletpassages for oil distribution, and also having interposed between the,source of oil supply and outlet passages a one-way valve, incombination, means whereby an air hose may be connected with theinterior of the conduit or pipe at a point intermediate its one-wayvalve and distributing outlet-s for the purpose described.

2. In an oiling system of the character described, including a pipe orconduit connected at its one end to a source of oil supply underpressure and having outlet passages for distributing oil, and alsohaving a one-way valve interposed between its outlet passages and sourceoi'Poil supply, an opening with a removable closure therefor occurringintermediate the one-way valve and outlet passages, in combination, aplug adapted to be substituted for thelremovable closure of the openingin said pipe and said plug having a passage therethrough and beingadapted to be connected with 'an air supply hose for the purposedescribed.

3. In an oiling system oft-he character described, including a conduitorpipe connected to a source of oil supply under pressure at its one endand having outlet passages tor the distribution of the oil, and alsohaving a one-way valve interposed between the outlet passages and thesource of oil supply, an opening closed by a threaded plug occurringbetween the outlet passages and one-way valve,'in combination, a plugadapt ed to be substituted for the first named plug, and said plughaving a passage therethrough and formed with a nipple extension wherebyan air supplyhose may be connected therewith for the purpose described.

4-. In an oiling system of the character described, including a pipe orconduit having an opening with a removable closure theretor, incombination, a plug adapted to substitute tor the removable closure andpermit the connection of a source of air supply under pressure with thepipe. V i

.5. In an oiling system of the character described, including a pipe orconduit having an openingwith a removable closure therefor, incombination, a plug adapted to be substitutedjfor the removable closureof the pipe, said plug having a nipple extension pipe for thepurwith theinterior of the pipe or conduit connecting a source of compressed airsupply with the pipe.

RANDALL WILLIAM SAUNDERS.

Witnesses: e v V r J. L. MINUoH, Max Conan.

adaptedto permit the connection of a source

